MMIC self-switched time shifter for broadband applications

Ouacha, A.; Carlegrim, B.

doi:10.1002/(sici)1098-2760(199809)19:1<15::aid-mop4>3.0.co;2-k

Cited by 8 publications

(1 citation statement)

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“…To reduce the chip dimension, the concept of constant-R network has been used for the delay bits. For the smallest bits, 1 and 2, the concept of selfswitched constant-R network [12] was used, giving low insertion loss and a smaller occupied area. For the other 7 bits, the conventional single pole double-throw (SPDT) configuration is used.…”

Section: Reconfigurable Beamformingmentioning

confidence: 99%

Wideband Antenna Arrays with Reconfigurable Beamforming and Beamshaping

Ouacha

Erickson

Gunnarsson

et al. 2007

2007 IEEE/MTT-S International Microwave Symposium

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The paper gives an overview of research results from FOI on dual polarized phased array antennas and integrated beamforming components for wideband and wideangle beamforming. The electromagnetic design and experimental evaluation of two antenna arrays in the 2-6 and 6-18 GHz bands, with 2x7x8 elements each, is described. The electromagnetic performance has been simulated using commercial and in-house developed codes. Experimental evaluation show that the arrays have reflection levels below -10 dB and good radiation properties in a frequency range of up to 1:3 and scan angles of up to 600. A concept with wideband reconfigurable beamforming with frequency tapered aperture areas is also presented. Two objectives are to enable adaptation of beamwidths to different requirements, and to enable a frequency independent beamwidth over a wide frequency range. Components for wideband beamforming with MMIC true-time delays and reconfigurable active power distribution working in the 2-18 GHz range are also presented.

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Section: Reconfigurable Beamformingmentioning

confidence: 99%

Wideband Antenna Arrays with Reconfigurable Beamforming and Beamshaping

Ouacha

Erickson

Gunnarsson

et al. 2007

2007 IEEE/MTT-S International Microwave Symposium

Self Cite

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Ultra broadband MMIC 5-bit time shifter

Ouacha

Carlegrim²,

Alfredson³

1999 Asia Pacific Microwave Conference. APMC'99. Microwaves Enter the 21st Century. Conference Proceedings (Cat. No.99TH8473)

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A Wideband GAAS 6-Bit True-Time Delay MMIC Employing On-Chip Digital Drivers

Willms

Ouacha

Boer

et al. 2000

2000 30th European Microwave Conference

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This paper describes a 2-20 GHz 6-bit True-Time Delay. A total equivalent electrical length in air of 43.5 mm (145 ps) is achieved over a 2-20 GHz bandwidth. Digital drivers and a serial-to-parallel converter are integrated on the same MMIC. The ED02AH 0.2 µm PHEMT process from OMMIC is used. The time delay elements are real-ised using constant-R networks. The three smallest bits make use of a self-switched version of the constant -R networks while the 3 largest bits use a topol-ogy with single-pole double-throw (SPDT) switches and constant-R networks in the delay path. Measurement results for a typical chip are presented.

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MMIC self-switched time shifter for broadband applications

Cited by 8 publications

References 1 publication

Wideband Antenna Arrays with Reconfigurable Beamforming and Beamshaping

Wideband Antenna Arrays with Reconfigurable Beamforming and Beamshaping

Ultra broadband MMIC 5-bit time shifter

A Wideband GAAS 6-Bit True-Time Delay MMIC Employing On-Chip Digital Drivers

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